Same time period, 2016 v. 2015.
AFAIK, 30% came from
@Disneyhead , either here or on Tragic. Whether or not he can divulge his source I don't know, but he's always been a level-headed poster. I will say it sounds high but not completely unrealistic given all the other anecdotal evidence I've seen and heard around town.
Since then, from a different source, I have heard 20% drop in overall Orlando visitor number since Pulse/gator attack. That may pop up in the
Sentinel soon, unless Disney gets the story spiked.